Patents by Inventor Yanzhong PAN

Yanzhong PAN has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20200291244
    Abstract: The invention pertains to an aqueous coating composition comprising: —an aqueous latex of a copolymer consisting essentially of recurring units derived (i) from vinylidene chloride (VDC), (ii) from vinyl chloride (VC), (iii) from one or more than one alkyl (meth)acrylate having from 1 to 12 carbon atoms in the alkyl group [monomer (MA)] and (iv) from one or more than one aliphatic alpha-beta unsaturated carboxylic acids [monomer (AA)], the proportion of recurring units derived from monomer (AA) being of at least 1.0 wt %, with respect to the total weight of the copolymer [copolymer (A)], wherein: (A) the said copolymer (A) is stable against dehydrochlorination, in a manner such that the total chloride content of the solid residue of the aqueous latex, after thermal treatment at about 120° C.
    Type: Application
    Filed: March 14, 2017
    Publication date: September 17, 2020
    Inventors: Yanzhong PAN, Agnès CHAPOTOT, Yves VANDERVEKEN
  • Patent number: 9920483
    Abstract: The invention relates to copolymer dispersions, comprising: a copolymer of (a) a vinyl ester of an alkanoic acid having from 1 to 13 carbon atoms; (b) ethylene; (c) from 0.5 to 5 pphm of a first cross-linking co-monomer comprising an ethylenically unsaturated monomer comprising an epoxy group; and (d) from 0.55 to 2 pphm of a second functional co-monomer comprising an ethylenically unsaturated dicarboxylic acid, mono- or di-ester thereof or anhydride thereof wherein the copolymer is dispersed in an aqueous medium comprising a stabilizer. The dispersions advantageously provide surprisingly good adhesion characteristics to paper substrates.
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: March 20, 2018
    Assignee: CELANESE SALES GERMANY GMBH
    Inventors: Yanzhong Pan, Cristiana Licheri, Nancy Coulson
  • Publication number: 20160153148
    Abstract: The invention relates to copolymer dispersions, comprising: a copolymer of (a) a vinyl ester of an alkanoic acid having from 1 to 13 carbon atoms; (b) ethylene; (c) from 0.5 to 5 pphm of a first cross-linking co-monomer comprising an ethylenically unsaturated monomer comprising an epoxy group; and (d) from 0.55 to 2 pphm of a second functional co-monomer comprising an ethylenically unsaturated dicarboxylic acid, mono- or di-ester thereof or anlaydride thereof wherein the copolymer is dispersed in an aqueous medium comprising a stabilizer. The dispersions advantageously provide surprisingly good adhesion characteristics to paper substrates.
    Type: Application
    Filed: June 12, 2014
    Publication date: June 2, 2016
    Inventors: Yanzhong PAN, Cristiana LICHERI, Nancy COULSON